If you want to shred (irreversible delete) packed files and directories, check the
Delete files from disk after packing to archive box in the Pack dialog box.
Shredder will use the algorithm chosen in the Shred Files dialog box.

Select if you want to use a key file or password for decrypting the archive.
See How It Works for details
on passwords and key files. You can choose if you want
to see the password (if you are sure that no one else can see it on your screen)
or if it should be hidden (in this case you need to type the password again to
confirm it), see the Hide typing of passwords box.

If you want to, you can enter a comment to the archive. It is stored as a plain text
(it is not encrypted).

Choose the Change button in Encryption row to set the encryption algorithm,
password hash algorithm, level of compression, and cipher mode in the
Encryption dialog box. We recommend to use
AES-256, SHA-2, Deflate-9, and CBC.

To create secure archive the plugin needs to collect unpredictable values to seed
the random number generator. See the indicator on the bottom of dialog, if it's not
yet full, move mouse pointer randomly or press any keys until it's full.